Improve the printability of PS

In the past practical work, we summarized the following methods that can improve the printing resistance of the PS plate.

1. When the number of printed products is large, properly print the plates. When baking, the temperature is generally 270°C. If the number of printed products is relatively small, the baking time is generally controlled at 70 seconds. When the number of prints is large, the baking time should be controlled at 150 seconds.

2. Under the premise of ensuring quality, it is necessary to adjust the pressure between the printing plate and the blanket, the water roller, and the ink roller so as to avoid a large force and wear the layout.

3, the pressure of water, ink roll on the printing plate on the width of the ink bar is generally controlled at about 5mm.

4. When printing on the plate, the printing plate must be tightened to prevent the water from dissolving the paper and adversely affect the plate.

5. Use the minimum amount of water under the principle that the plate is not dirty.

6, correctly grasp the PH value of the water bucket solution, generally should be kept in the range of 5-6, showing if acidic.

7. If the machine is to be suspended during the printing process, the printing plate should be squeegee-treated according to the length of the downtime to prevent oxidation of the plate.

Source: Bookbinding company Zhang Yunbo